223 Cal, 1:7 Twist, 25” Long, 1.06” OD, 416SS, Turned on Center Barrel Blank. Button Rifled, Air Gauged, and Stress Relieved.
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Posted by J.G. on 4th May 2018
I've used GM barrel blanks to machine AR barrels, bolt action target rifles, and muzzle loading rifles. I have come to the conclusion that they are extremely accurate barrels no matter what you happen to be building. You can't go wrong with GM. The concentricity between the bore and grooves is fantastic and so is the uniformity of the groove shape between each other. Never high spots protruding from the groove side into the bore. Great quality!
Posted by Austin on 19th Dec 2017
I bought this barrel blank a while back for a replacement for my Howa Mini Action. I'm very impressed with the quality and follow up from Green Mountain. I will still continue to purchase their products and will be my first choice for replacement barrels.
Posted by Harold Howell on 15th Aug 2015
I finally got to shoot 600 yds. Ammo used 75gr Hornady match and 75gr Tulammo. I was surprised. Both rendered 3" groups at 600 yds! I think that's pretty good.
Posted by Harold in CO on 7th May 2015
So I got his blank to build a long range 223. I chambered it 223 Wylde and finished it to 24.25" OAL. Rifle length gas .936 block.
After the first 200 rounds it settled down and now it consistently hits at 1/2 MOA at 200 yards
This is a great product.
Buy it you won't be disappointed.
Posted by Unknown on 10th Dec 2014
Used this blank for a Remage project with barrel nut on a Rem 700. Finished at 17" and getting 2800 fps with 80 vlds and its a hammer.
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